/**
     * Tests if this entity should pickup a weapon or an armor. Entity drops current weapon or armor if the new one is
     * better.
     */
    protected void updateEquipmentIfNeeded(EntityItem itemEntity)
    {
        ItemStack itemstack = itemEntity.getEntityItem();
        EntityEquipmentSlot entityequipmentslot = func_184640_d(itemstack);
        boolean flag = true;
        ItemStack itemstack1 = this.getItemStackFromSlot(entityequipmentslot);

        if (itemstack1 != null)
        {
            if (entityequipmentslot.func_188453_a() == EntityEquipmentSlot.Type.HAND)
            {
                if (itemstack.getItem() instanceof ItemSword && !(itemstack1.getItem() instanceof ItemSword))
                {
                    flag = true;
                }
                else if (itemstack.getItem() instanceof ItemSword && itemstack1.getItem() instanceof ItemSword)
                {
                    ItemSword itemsword = (ItemSword)itemstack.getItem();
                    ItemSword itemsword1 = (ItemSword)itemstack1.getItem();

                    if (itemsword.getDamageVsEntity() == itemsword1.getDamageVsEntity())
                    {
                        flag = itemstack.getMetadata() > itemstack1.getMetadata() || itemstack.hasTagCompound() && !itemstack1.hasTagCompound();
                    }
                    else
                    {
                        flag = itemsword.getDamageVsEntity() > itemsword1.getDamageVsEntity();
                    }
                }
                else if (itemstack.getItem() instanceof ItemBow && itemstack1.getItem() instanceof ItemBow)
                {
                    flag = itemstack.hasTagCompound() && !itemstack1.hasTagCompound();
                }
                else
                {
                    flag = false;
                }
            }
            else if (itemstack.getItem() instanceof ItemArmor && !(itemstack1.getItem() instanceof ItemArmor))
            {
                flag = true;
            }
            else if (itemstack.getItem() instanceof ItemArmor && itemstack1.getItem() instanceof ItemArmor)
            {
                ItemArmor itemarmor = (ItemArmor)itemstack.getItem();
                ItemArmor itemarmor1 = (ItemArmor)itemstack1.getItem();

                if (itemarmor.damageReduceAmount == itemarmor1.damageReduceAmount)
                {
                    flag = itemstack.getMetadata() > itemstack1.getMetadata() || itemstack.hasTagCompound() && !itemstack1.hasTagCompound();
                }
                else
                {
                    flag = itemarmor.damageReduceAmount > itemarmor1.damageReduceAmount;
                }
            }
            else
            {
                flag = false;
            }
        }

        if (flag && this.func_175448_a(itemstack))
        {
            double d0;

            switch (entityequipmentslot.func_188453_a())
            {
                case HAND:
                    d0 = (double)this.inventoryHandsDropChances[entityequipmentslot.func_188454_b()];
                    break;

                case ARMOR:
                    d0 = (double)this.inventoryArmorDropChances[entityequipmentslot.func_188454_b()];
                    break;

                default:
                    d0 = 0.0D;
            }

            if (itemstack1 != null && (double)(this.rand.nextFloat() - 0.1F) < d0)
            {
                this.entityDropItem(itemstack1, 0.0F);
            }

            if (itemstack.getItem() == Items.diamond && itemEntity.getThrower() != null)
            {
                EntityPlayer entityplayer = this.worldObj.getPlayerEntityByName(itemEntity.getThrower());

                if (entityplayer != null)
                {
                    entityplayer.triggerAchievement(AchievementList.field_187996_x);
                }
            }

            this.setItemStackToSlot(entityequipmentslot, itemstack);

            switch (entityequipmentslot.func_188453_a())
            {
                case HAND:
                    this.inventoryHandsDropChances[entityequipmentslot.func_188454_b()] = 2.0F;
                    break;

                case ARMOR:
                    this.inventoryArmorDropChances[entityequipmentslot.func_188454_b()] = 2.0F;
            }

            this.persistenceRequired = true;
            this.onItemPickup(itemEntity, 1);
            itemEntity.setDead();
        }
    }